6. Intervals supersetted with ab exercises like planks or side planks (which are made harder by the high breathing rate)
7. Bodyweight Challenges - Like the Bodyweight Cardio 1000 (Challenge type workouts get you hooked on exercise and prevent you from skipping workouts)

8. DB-BW Fusion Workouts - Pair a dumbbell exercise and bodyweight exercise together in a superset and go back and forth as many times as possible in 10 minutes.

9. Hybrid Triset Workouts - 3 exercises performed in a tri-set, using one dumbbell exercise, one bodyweight exercise, and one kettlebell or stability ball exercise. Requires just a little equipment, but work great!